Improved surge-reliever



lnitrd Sima gnant @Mira C. D. CUTTING, GF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND WILLIAM J. KEEFE, SAME PLACE.

Letters Patent No. 96,087, dated October 26, 1869. 1

IMPROVE!) SURGE-RELIEVER.

The Schedule referred to in these Lettera Patent and making part of the same.

To all whom it may concern.-

Be it known that I, 0. D. CUTTING, of Boston, inV

in Surge-Relievers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in combining with a fixed disk an oscillating disk, having a groove on its periphery for the cable, the two disks having within them springs, which, acting through bosses, fixed to a loose diaphragm, allow the oscillating disk to yield to the action of the cable, thus preventing the cable as well as the fixed parts from injury, that would otherwise occu'r from sudden shocks caused by heavy seas.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and use.

Drawings.

one of the springs.

Figure 4 is a plan, showing the under side of the upper disk.

Figure 5 is a perspective view of the diaphragm H.

I construct my invention as follows;

The lower disk A, which is to be firmly bolted to the deck, has within in a. circular Boeket, K, eg. 3, in

which two or more springs, one of whichl is shown at S, fig. 3, are placed. These springs act against proper buttresses, and may be made of metal or rubber, and of any suitable form.

The diaphragm H, figs. 3 and 4, lies immediately over these springs, as shown in g. 3, in such a manner that the bosses G and G', on its lower side, come in contact with the springs S.

'The upper or oscillating disk B has a circular socket, K', fig. 4, on its under side, in which springs V and V are placed, acting against the fixed buttresses W W, g. 4, so arranged that when the diskB is placed right side up upon the disk A, the diaphragm H being between them, all the springs will acttogeth'er to prevent the upper disk B from revolving in the direction indicated by the arrow, iig. 1.

C, iig. l, represents a chain or cable-groove, and

D, the dog for fastening the cable.

My invention may be used in connection with windlasses, capstans, 85e., or may be used by itself.

1f desirable, a number of diaphragms made like the one represented in fig. 5, may be placed one above the other, with springs between them, so as to admit of greater motion of the disk B.

If but slight motion of the disk B is required, the diaphragm H may be omitted, and the springs be allowed to act directly upon the buttresses in the upper and lower disks.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The oscillating disk B, in combination with the lower or fixed disk A and springs, arranged substantially as described, and for the purpose set forth.

2. The disk B, in combination with the springs V V', diaphragm H, and springs S, working substantially as described, and for the purpose set forth. l

O. D. CUTTING.

Witnesses:

vFLANK G. PARKER,

JAs. S. CoNAN'r.- 

